624 lines
18 KiB
Vue
624 lines
18 KiB
Vue
<script setup lang="ts">
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import type { PropType } from 'vue'
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import { encode } from '@monosky/base64'
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import { object, string, number, type InferType } from 'yup'
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interface Subtitle {
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start: string
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end: string
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text: string
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active?: boolean
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}
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const props = defineProps({
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course: {
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type: Object as PropType<resp.gen.CourseGenItem>,
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required: true,
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},
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})
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const dayjs = useDayjs()
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const toast = useToast()
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const loginState = useLoginState()
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const isDrawerActive = ref(false)
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const isLoading = ref(true)
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const isSaving = ref(false)
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const rawSrt = ref<string | null>(null)
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const subtitles = ref<Subtitle[]>([])
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const modified = ref(false)
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const isExporting = ref(false)
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const videoElement = ref<HTMLVideoElement | null>(null)
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const subtitleStyleSchema = object({
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color: string().required(),
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fontSize: number().required(),
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effect: string().required(),
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bottomOffset: number().required(),
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})
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type subtitleStyleSchema = InferType<typeof subtitleStyleSchema>
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const subtitleStyleState = reactive<subtitleStyleSchema>({
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color: '#fff',
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effect: 'shadow',
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fontSize: 24,
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bottomOffset: 12,
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})
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const loadSrt = async () => {
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isLoading.value = true
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try {
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// const response = await fetch(props.course.subtitle_url)
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const response = await fetch(await fetchCourseSubtitleUrl(props.course))
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const text = await response.text()
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rawSrt.value = text
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parseSrt(text)
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} catch (err) {
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toast.add({
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title: '加载字幕失败',
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description: `${err}` || '未知错误',
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color: 'red',
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})
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} finally {
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isLoading.value = false
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}
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}
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const parseSrt = (srt: string) => {
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const lines = srt.split(/\r?\n/)
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const regex = /(\d{2}:\d{2}:\d{2},\d{3}) --> (\d{2}:\d{2}:\d{2},\d{3})/
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let subtitle: Subtitle | null = null
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lines.forEach((line) => {
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if (/^\d+$/.test(line.trim())) return
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const match = line.match(regex)
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if (match) {
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if (subtitle) {
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subtitles.value.push(subtitle)
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}
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subtitle = {
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start: match[1],
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end: match[2],
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text: '',
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}
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} else if (subtitle) {
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subtitle.text += line.trim() ? line : ''
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}
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})
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if (subtitle) {
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subtitles.value.push(subtitle)
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}
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}
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const generateSrt = () => {
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return subtitles.value
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.map((subtitle, index) => {
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return `${index + 1}\n${subtitle.start} --> ${subtitle.end}\n${
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subtitle.text
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}\n`
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})
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.join('\n')
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}
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const formatTime = (time: string) => {
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const parts = time.split(',')
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const timeParts = parts[0].split(':')
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return {
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hours: parseInt(timeParts[0]),
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minutes: parseInt(timeParts[1]),
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seconds: parseInt(timeParts[2]),
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milliseconds: parseInt(parts[1]),
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}
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}
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const formatTimeToDayjs = (time: string) => {
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const parts = time.split(',')
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const timeParts = parts[0].split(':')
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return dayjs()
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.hour(parseInt(timeParts[0]))
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.minute(parseInt(timeParts[1]))
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.second(parseInt(timeParts[2]))
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.millisecond(parseInt(parts[1]))
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}
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const syncSubtitles = () => {
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if (!videoElement.value) return
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const currentTime = videoElement.value.currentTime * 1000 // convert to milliseconds
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subtitles.value.forEach((subtitle) => {
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const start = formatTime(subtitle.start)
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const end = formatTime(subtitle.end)
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const startTime =
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(start.hours * 3600 + start.minutes * 60 + start.seconds) * 1000 +
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start.milliseconds
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const endTime =
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(end.hours * 3600 + end.minutes * 60 + end.seconds) * 1000 +
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end.milliseconds
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subtitle.active = currentTime >= startTime && currentTime <= endTime
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// scroll active subtitle into view
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if (subtitle.active) {
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const element = document.getElementById(
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`subtitle-${subtitles.value.indexOf(subtitle)}`
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)!
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const parent = element?.parentElement
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// scroll element to the center of parent
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parent?.scrollTo({
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top: element.offsetTop,
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})
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}
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})
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}
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const onSubtitleInputClick = (subtitle: Subtitle) => {
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if (!videoElement.value) return
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if (!subtitle.active) {
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videoElement.value.currentTime =
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formatTime(subtitle.start).hours * 3600 +
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formatTime(subtitle.start).minutes * 60 +
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formatTime(subtitle.start).seconds +
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1
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}
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videoElement.value.pause()
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}
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const saveNewSubtitle = () => {
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isSaving.value = true
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const encodedSubtitle = encode(generateSrt())
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useFetchWrapped<
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req.gen.CourseSubtitleCreate & AuthedRequest,
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BaseResponse<resp.gen.CourseSubtitleCreate>
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>('App.Digital_VideoSubtitle.CreateFile', {
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token: loginState.token!,
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user_id: loginState.user.id,
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sub_type: 1,
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sub_content: encodedSubtitle,
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task_id: props.course?.task_id,
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})
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.then((_) => {
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modified.value = false
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toast.add({
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color: 'green',
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title: '字幕已保存',
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description: '修改后的字幕文件已保存',
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})
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})
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.finally(() => {
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isSaving.value = false
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})
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}
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const exportVideo = async () => {
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isExporting.value = true
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const srtResponse = await (
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await fetch(await fetchCourseSubtitleUrl(props.course))
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).blob()
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if (!srtResponse) {
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toast.add({
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title: '获取字幕失败',
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description: '无法获取字幕文件，请稍后重试',
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color: 'red',
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icon: 'i-tabler-alert-triangle',
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})
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return
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}
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const srtBlob = new Blob([srtResponse], { type: 'text/plain' })
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const srtUrl = URL.createObjectURL(srtBlob)
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useVideoSubtitleEmbedding(props.course.video_url, srtUrl, {
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color: subtitleStyleState.color,
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fontSize: subtitleStyleState.fontSize,
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textShadow:
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subtitleStyleState.effect === 'shadow'
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? {
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offsetX: 2,
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offsetY: 2,
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blur: 6,
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color: 'rgba(0, 0, 0, 0.35)',
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}
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: {
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offsetX: 0,
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offsetY: 0,
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blur: 0,
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color: 'transparent',
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},
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strokeStyle: subtitleStyleState.effect === 'stroke' ? '#000 2px' : 'none',
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bottomOffset: subtitleStyleState.bottomOffset,
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})
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.then((blobUrl) => {
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const { download } = useDownload(blobUrl, 'combined_video.mp4')
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download()
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})
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.finally(() => {
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isExporting.value = false
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})
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}
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onMounted(() => {
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if (rawSrt.value) {
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parseSrt(rawSrt.value)
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}
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})
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defineExpose({
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open() {
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isDrawerActive.value = true
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if (!rawSrt.value) loadSrt()
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},
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close() {
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isDrawerActive.value = false
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},
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})
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</script>
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<template>
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<div>
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<USlideover
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v-model="isDrawerActive"
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:prevent-close="modified"
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:ui="{ width: 'max-w-lg' }"
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>
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<UCard
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class="flex flex-col flex-1 overflow-hidden"
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:ui="{
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body: { base: 'overflow-auto flex-1' },
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ring: '',
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divide: 'divide-y divide-gray-100 dark:divide-gray-800',
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}"
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>
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<template #header>
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<UButton
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color="gray"
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variant="ghost"
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size="sm"
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icon="tabler:x"
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class="flex sm:hidden absolute end-5 top-5 z-10"
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square
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padded
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@click="isDrawerActive = false"
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/>
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<div class="flex flex-col">
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<h3
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class="text-base font-semibold leading-6 text-gray-900 dark:text-white"
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>
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字幕编辑器
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</h3>
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<h3
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class="text-xs font-semibold text-blue-500"
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v-if="course.title"
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>
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{{ course.title }}
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</h3>
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</div>
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</template>
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<div
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v-if="isLoading"
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class="flex justify-center items-center text-primary"
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>
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<svg
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xmlns="http://www.w3.org/2000/svg"
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width="32"
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height="32"
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viewBox="0 0 24 24"
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>
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<defs>
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<filter id="svgSpinnersGooeyBalls20">
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<feGaussianBlur
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in="SourceGraphic"
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result="y"
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stdDeviation="1"
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/>
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<feColorMatrix
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in="y"
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result="z"
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values="1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 18 -7"
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/>
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<feBlend
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in="SourceGraphic"
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in2="z"
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/>
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</filter>
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</defs>
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<g filter="url(#svgSpinnersGooeyBalls20)">
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<circle
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cx="5"
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cy="12"
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r="4"
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fill="currentColor"
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>
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<animate
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attributeName="cx"
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calcMode="spline"
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dur="2s"
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keySplines=".36,.62,.43,.99;.79,0,.58,.57"
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repeatCount="indefinite"
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values="5;8;5"
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/>
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</circle>
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<circle
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cx="19"
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cy="12"
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r="4"
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fill="currentColor"
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>
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<animate
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attributeName="cx"
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calcMode="spline"
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dur="2s"
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keySplines=".36,.62,.43,.99;.79,0,.58,.57"
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repeatCount="indefinite"
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values="19;16;19"
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/>
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</circle>
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<animateTransform
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attributeName="transform"
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dur="0.75s"
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repeatCount="indefinite"
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type="rotate"
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values="0 12 12;360 12 12"
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/>
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</g>
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</svg>
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</div>
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<div
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v-else
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class="flex flex-col h-full gap-2 overflow-hidden overscroll-y-none overshadow"
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>
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<div class="relative w-full aspect-video flex-1">
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<div
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class="absolute w-fit mx-auto inset-x-0 font-sans font-bold subtitle"
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:class="{
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stroke: subtitleStyleState.effect === 'stroke',
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}"
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:style="{
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lineHeight: '1',
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color: subtitleStyleState.color,
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fontSize: subtitleStyleState.fontSize / 1.5 + 'px',
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bottom: subtitleStyleState.bottomOffset / 1.5 + 'px',
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textShadow:
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subtitleStyleState.effect === 'shadow'
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? '2px 2px 4px rgba(0, 0, 0, 0.25)'
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: undefined,
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}"
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>
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{{ subtitles.find((sub) => sub.active)?.text }}
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</div>
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<video
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controls
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ref="videoElement"
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class="rounded"
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style="-webkit-user-drag: none"
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:src="course.video_url"
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@timeupdate="syncSubtitles"
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/>
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</div>
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<UAccordion
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:items="[{ label: '字幕选项' }]"
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color="gray"
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size="lg"
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>
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<template #item>
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<div
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class="border dark:border-neutral-700 rounded-lg space-y-4 p-4 pb-6"
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>
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<div class="w-full flex flex-col justify-center">
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<div
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class="rounded-md w-full aspect-video relative overflow-hidden"
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>
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<img
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class="object-cover w-full h-full rounded-md"
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src="https://static-xsh.oss-cn-chengdu.aliyuncs.com/file/2024-08-04/9ed1e5c0133824f0bcf79d1ad9e9ecbb.png"
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/>
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<span
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class="absolute font-sans font-bold bottom-0 left-1/2 transform -translate-x-1/2 subtitle"
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:class="{
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stroke: subtitleStyleState.effect === 'stroke',
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}"
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:style="{
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lineHeight: '1',
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color: subtitleStyleState.color,
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fontSize: subtitleStyleState.fontSize / 1.5 + 'px',
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bottom: subtitleStyleState.bottomOffset / 1.5 + 'px',
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textShadow:
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subtitleStyleState.effect === 'shadow'
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? '2px 2px 4px rgba(0, 0, 0, 0.25)'
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: undefined,
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}"
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>
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字幕样式预览
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</span>
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</div>
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<span class="text-sm italic opacity-50">
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字幕预览仅供参考，以实际渲染效果为准
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</span>
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</div>
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<UForm
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:schema="subtitleStyleSchema"
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:state="subtitleStyleState"
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class="flex flex-col gap-4"
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>
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<div class="flex gap-4">
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<UFormGroup
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label="字幕颜色"
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name="fontColor"
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class="w-full"
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size="xs"
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>
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<USelectMenu
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:options="[
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{
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label: '黑色',
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value: '#000',
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},
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{
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label: '白色',
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value: '#fff',
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},
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]"
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option-attribute="label"
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value-attribute="value"
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v-model="subtitleStyleState.color"
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/>
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</UFormGroup>
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<UFormGroup
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label="字幕效果"
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name="effect"
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class="w-full"
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size="xs"
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>
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<USelectMenu
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:options="[
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{
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label: '阴影',
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value: 'shadow',
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},
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{
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label: '描边',
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value: 'stroke',
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},
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]"
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option-attribute="label"
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value-attribute="value"
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v-model="subtitleStyleState.effect"
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/>
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</UFormGroup>
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</div>
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<UFormGroup
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:label="`字幕大小 ${subtitleStyleState.fontSize}px`"
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name="fontSize"
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size="xs"
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>
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<URange
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:max="64"
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:min="20"
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:step="2"
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size="sm"
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v-model="subtitleStyleState.fontSize"
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/>
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</UFormGroup>
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<UFormGroup
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:label="`字幕偏移量 ${subtitleStyleState.bottomOffset}px`"
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name="offset"
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size="xs"
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>
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<URange
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:max="30"
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:min="0"
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:step="1"
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size="sm"
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v-model="subtitleStyleState.bottomOffset"
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/>
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</UFormGroup>
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</UForm>
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</div>
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</template>
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</UAccordion>
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<ul
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class="flex-1 px-0.5 pb-[100%] overflow-y-auto space-y-0.5 scroll-smooth relative"
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>
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<li
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v-for="(subtitle, index) in subtitles"
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:key="index"
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:id="'subtitle-' + index"
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>
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<div :class="{ 'text-primary': subtitle.active }">
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<span class="text-xs font-medium opacity-60">
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{{ formatTimeToDayjs(subtitle.start).format('HH:mm:ss') }}
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-
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{{ formatTimeToDayjs(subtitle.end).format('HH:mm:ss') }}
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<span class="opacity-50">
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[{{
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formatTimeToDayjs(subtitle.end).diff(
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formatTimeToDayjs(subtitle.start),
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'second'
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)
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}}s]
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</span>
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</span>
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<UInput
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v-model="subtitle.text"
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class="w-full"
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placeholder="请输入字幕内容"
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:name="'subtitle-' + index"
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:autofocus="false"
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:color="subtitle.active ? 'primary' : undefined"
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@click="onSubtitleInputClick(subtitle)"
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@input="
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() => {
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if (!modified) modified = true
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}
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"
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>
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<template #trailing>
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<UIcon
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v-show="subtitle.active"
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name="tabler:keyframe-align-vertical-filled"
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/>
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</template>
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</UInput>
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</div>
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</li>
|
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</ul>
|
||
</div>
|
||
|
||
<template #footer>
|
||
<div class="flex justify-end items-center gap-2">
|
||
<span
|
||
v-if="modified"
|
||
class="text-sm text-yellow-500 font-medium"
|
||
>
|
||
已更改但未保存
|
||
</span>
|
||
<UButton
|
||
:loading="isExporting"
|
||
variant="soft"
|
||
icon="i-tabler-file-export"
|
||
@click="exportVideo"
|
||
>
|
||
导出视频
|
||
</UButton>
|
||
<UButton
|
||
:disabled="isExporting || !modified"
|
||
:loading="isSaving"
|
||
icon="i-tabler-device-floppy"
|
||
@click="saveNewSubtitle"
|
||
>
|
||
保存{{ isSaving ? '中' : '' }}
|
||
</UButton>
|
||
</div>
|
||
</template>
|
||
</UCard>
|
||
</USlideover>
|
||
</div>
|
||
</template>
|
||
|
||
<style scoped>
|
||
.overshadow {
|
||
@apply relative;
|
||
}
|
||
|
||
.overshadow:after {
|
||
content: '';
|
||
inset: 80% 0 0;
|
||
position: absolute;
|
||
@apply bg-gradient-to-b from-transparent to-white dark:to-neutral-950 pointer-events-none;
|
||
}
|
||
|
||
.subtitle.stroke {
|
||
text-shadow:
|
||
1px 1px 0 #000,
|
||
-1px -1px 0 #000,
|
||
1px -1px 0 #000,
|
||
-1px 1px 0 #000;
|
||
}
|
||
|
||
.subtitle.shadow {
|
||
text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.25);
|
||
}
|
||
</style>
|